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CATALOG
Fosi Audio Box X2
Fosi Audio Box X2
Fosi Audio Box X2
Fosi Audio Box X2
Fosi Audio Box X2

Description

The Fosi Audio Box X2 is a MM tube phono preamplifier designed for those who want to approach analog sound with a compact, versatile product with surprising sound quality for its price range. It converts phono signals to line signals by applying the standard RIAA equalization curve , eliminating parasitic frequencies and returning clean, warm and well-defined audio.

One of the most interesting features of the Box X2 is the ability to select between three switchable gain levels: 39, 42 and 45 dB , thus adapting to MM cartridges with different output sensitivities. This flexibility makes it compatible with a wide range of turntables, without requiring any special technical intervention.

The circuit is based on vacuum tubes , with support for models such as 6K4, 6J1, 6J4, GE5654, 6AK5 , and other equivalents. Swapping tubes is easy and allows you to customize the sonic character of the device: a practice greatly appreciated by analog audio enthusiasts who want to experiment without spending a lot of money.

The Box X2 also integrates a 3.5mm auxiliary input , which allows it to be used as a generic tube preamplifier , connecting digital or portable sources to enjoy the typical sound coloration of tubes even with audio files or streaming. The included ground clamp protects the turntable from ground hum, a detail often overlooked in entry-level products but essential for peaceful listening.

Anyone wondering "what is a good tube phono preamplifier to start with?" or "how to connect a turntable to a modern amplifier?" will find the Box X2 a concrete and economically accessible answer, without sacrificing build or sound quality.

Specifications

Dimensions (WxHxD) 118 x 98 x 33 mm
Weight 0.3 kg
Trim Black
Alimentazione 12V / 1,5A AC 110–240V
Stadio phono MM
Analog inputs RCA (phono MM) + AUX 3.5mm
Digital outputs RCA (line level)
Amplification type valve
Valves used 6K4, 6J1, 6J4, GE5654, 6AK5, 66 and equivalents
Harmonic Distortion (THD) 0.1%
Rapporto S/N 98 dB

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Box X2

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Availability

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